【Idler Pulleys Bolt Replace Number】: 166040P010, 166040P011, 1660431010, 1660431020, 1660431030 【Fitment】: Idler Pulley for Lexus ES350 2007-2021, for Lexus GS350 2007-2020, for Lexus GS450h 2007-2011, for Lexus IS250 2006-2015, for Lexus IS350 2006-2021, for Lexus RC300 2016-2021, for Lexus RX350 2007-2021, for Toyota 4Runner 2003-2021, for Toyota Avalon 2006-2021, for Toyota Camry 2007-2021, for Toyota FJ Cruiser 2007-2014, for Toyota Highlander 2008-2021, for Toyota RAV4 2006-2012, for Toyota Sienna 2007-2020, for Toyota Tacoma 2005-2021, for Toyota Tundra 05-14, for Toyota Venza 09-16 【Function】: Idler pulley is designed for use on automobiles and light duty trucks as a locked center tensioning pulley, an automatic belt tensioner pulley, or an idler pulley. Steel or thermoplastic construction that provides high durability for long life. 【Feature】: Bearing is designed for application specific speed and load requirements. Easy to install: Direct replacement. 【Package Included】: 1 x Idler Pulley, this accessory drive belt idler pulley matches the old equipment pulley on the car Idler Pulley for Lexus ES350 GS350 GS450h IS350 RX350 2007-2021 for Toyota 4Runner Camry Tacoma RAV4 Tundra Highlander Sienna 2003-2021 Drive Belt Idler Pulley No.16604-31020/16604-0P011